package edu.xcdq;

public class Demo03 {
    public static void main(String[] args) {
        int  days =46;
        int  week = 46/7;
        int leftday = 46 % 7;
        System.out.println("46天等于"+week+"周"+"剩余"+leftday);

        double PAI = 3.14;
        float  r  = 1.5f;
        double area = PAI * r*r;
        System.out.println("半径为"+r+"圆的面积："+area);



    }
}
